1 | //driver_oss.c: |
---|
2 | |
---|
3 | /* |
---|
4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
---|
5 | * |
---|
6 | * This file is part of roarclients a part of RoarAudio, |
---|
7 | * a cross-platform sound system for both, home and professional use. |
---|
8 | * See README for details. |
---|
9 | * |
---|
10 | * This file is free software; you can redistribute it and/or modify |
---|
11 | * it under the terms of the GNU General Public License version 3 |
---|
12 | * as published by the Free Software Foundation. |
---|
13 | * |
---|
14 | * RoarAudio is distributed in the hope that it will be useful, |
---|
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
17 | * GNU General Public License for more details. |
---|
18 | * |
---|
19 | * You should have received a copy of the GNU General Public License |
---|
20 | * along with this software; see the file COPYING. If not, write to |
---|
21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
---|
22 | * |
---|
23 | */ |
---|
24 | |
---|
25 | #include <roaraudio.h> |
---|
26 | #include "driver.h" |
---|
27 | |
---|
28 | #if defined(ROAR_HAVE_OSS_BSD) || defined(ROAR_HAVE_OSS) |
---|
29 | |
---|
30 | #if defined(__OpenBSD__) || defined(__NetBSD__) |
---|
31 | #include <soundcard.h> |
---|
32 | #else |
---|
33 | #include <sys/soundcard.h> |
---|
34 | #endif |
---|
35 | #include <sys/ioctl.h> |
---|
36 | |
---|
37 | #ifdef SNDCTL_DSP_SETFRAGMENT |
---|
38 | static void roar_cdriver_oss_try_buf_setups(int fh) { |
---|
39 | int blocksizes[] = {11, 12, 13}; |
---|
40 | int blocks[] = {4, 5, 6, 3, 7, 2, 8}; |
---|
41 | int bs, b; |
---|
42 | int tmp; |
---|
43 | |
---|
44 | for (bs = 0; bs < sizeof(blocksizes)/sizeof(int); bs++) { |
---|
45 | for (b = 0; b < sizeof(blocks) /sizeof(int); b++ ) { |
---|
46 | tmp = blocksizes[bs] | (blocks[b] << 16); |
---|
47 | if ( ioctl(fh, SNDCTL_DSP_SETFRAGMENT, &tmp) == 0 ) |
---|
48 | return; |
---|
49 | } |
---|
50 | } |
---|
51 | } |
---|
52 | #endif |
---|
53 | |
---|
54 | #define _err() roar_vio_close(calls); return -1 |
---|
55 | |
---|
56 | int roar_cdriver_oss(struct roar_vio_calls * calls, char * name, char * dev, struct roar_audio_info * info, int dir) { |
---|
57 | int fh; |
---|
58 | int tmp, ctmp; |
---|
59 | |
---|
60 | ROAR_DBG("roar_cdriver_oss(*) = ?"); |
---|
61 | |
---|
62 | #ifdef ROAR_DEFAULT_OSS_DEV |
---|
63 | if ( dev == NULL ) |
---|
64 | dev = ROAR_DEFAULT_OSS_DEV; |
---|
65 | #endif |
---|
66 | |
---|
67 | if ( dev == NULL ) |
---|
68 | return -1; |
---|
69 | |
---|
70 | ROAR_DBG("roar_cdriver_oss(*) = ?"); |
---|
71 | |
---|
72 | switch (dir) { |
---|
73 | case ROAR_DIR_PLAY: |
---|
74 | case ROAR_DIR_MONITOR: |
---|
75 | case ROAR_DIR_OUTPUT: |
---|
76 | tmp = O_WRONLY; |
---|
77 | break; |
---|
78 | case ROAR_DIR_BIDIR: |
---|
79 | tmp = O_RDWR; |
---|
80 | break; |
---|
81 | case ROAR_DIR_RECORD: |
---|
82 | tmp = O_RDONLY; |
---|
83 | break; |
---|
84 | default: |
---|
85 | return -1; |
---|
86 | } |
---|
87 | |
---|
88 | ROAR_DBG("roar_cdriver_oss(*) = ?"); |
---|
89 | |
---|
90 | if ( roar_vio_open_file(calls, dev, tmp, 0644) == -1 ) |
---|
91 | return -1; |
---|
92 | |
---|
93 | if ( roar_vio_ctl(calls, ROAR_VIO_CTL_GET_FH, &fh) == -1 ) { |
---|
94 | _err(); |
---|
95 | } |
---|
96 | |
---|
97 | // channels: |
---|
98 | #ifdef SNDCTL_DSP_CHANNELS |
---|
99 | tmp = info->channels; |
---|
100 | |
---|
101 | if ( ioctl(fh, SNDCTL_DSP_CHANNELS, &tmp) == -1 ) { |
---|
102 | _err(); |
---|
103 | } |
---|
104 | |
---|
105 | if ( tmp != info->channels ) { |
---|
106 | _err(); |
---|
107 | } |
---|
108 | #else |
---|
109 | switch (info->channels) { |
---|
110 | case 1: tmp = 0; break; |
---|
111 | case 2: tmp = 1; break; |
---|
112 | default: _err(); |
---|
113 | } |
---|
114 | |
---|
115 | if ( ioctl(fh, SNDCTL_DSP_STEREO, &tmp) == -1 ) { |
---|
116 | _err(); |
---|
117 | } |
---|
118 | #endif |
---|
119 | |
---|
120 | // codec/bits: |
---|
121 | if ( info->codec != ROAR_CODEC_ALAW && info->codec != ROAR_CODEC_MULAW && info->bits != 16 ) { |
---|
122 | // other modes are currently not supported |
---|
123 | _err(); |
---|
124 | } |
---|
125 | |
---|
126 | switch (info->codec) { |
---|
127 | case ROAR_CODEC_PCM_S_LE: |
---|
128 | tmp = AFMT_S16_LE; |
---|
129 | break; |
---|
130 | case ROAR_CODEC_PCM_S_BE: |
---|
131 | tmp = AFMT_S16_BE; |
---|
132 | break; |
---|
133 | case ROAR_CODEC_PCM_U_LE: |
---|
134 | tmp = AFMT_U16_LE; |
---|
135 | break; |
---|
136 | case ROAR_CODEC_PCM_U_BE: |
---|
137 | tmp = AFMT_U16_BE; |
---|
138 | break; |
---|
139 | case ROAR_CODEC_ALAW: |
---|
140 | tmp = AFMT_A_LAW; |
---|
141 | break; |
---|
142 | case ROAR_CODEC_MULAW: |
---|
143 | tmp = AFMT_MU_LAW; |
---|
144 | break; |
---|
145 | default: |
---|
146 | _err(); |
---|
147 | } |
---|
148 | |
---|
149 | ctmp = tmp; |
---|
150 | #ifdef SNDCTL_DSP_SETFMT |
---|
151 | if ( ioctl(fh, SNDCTL_DSP_SETFMT, &tmp) == -1 ) { |
---|
152 | #else |
---|
153 | if ( ioctl(fh, SNDCTL_DSP_SAMPLESIZE, &tmp) == -1 ) { |
---|
154 | #endif |
---|
155 | _err(); |
---|
156 | } |
---|
157 | |
---|
158 | if ( tmp != ctmp ) { |
---|
159 | _err(); |
---|
160 | } |
---|
161 | |
---|
162 | // rate: |
---|
163 | tmp = info->rate; |
---|
164 | |
---|
165 | if ( ioctl(fh, SNDCTL_DSP_SPEED, &tmp) == -1 ) { |
---|
166 | _err(); |
---|
167 | } |
---|
168 | |
---|
169 | if ( tmp != info->rate ) { |
---|
170 | _err(); |
---|
171 | } |
---|
172 | |
---|
173 | #ifdef SNDCTL_DSP_SETFRAGMENT |
---|
174 | roar_cdriver_oss_try_buf_setups(fh); |
---|
175 | #endif |
---|
176 | |
---|
177 | return 0; |
---|
178 | } |
---|
179 | |
---|
180 | #endif |
---|
181 | |
---|
182 | //ll |
---|